The 15-minute show was recorded by Bowie to promote the release of Bowie’s 1973 covers album ‘Pin Ups’ but never made it on air. The quarter of an hour broadcast includes tracks from the album, as well as clips of Bowie talking about the London music scene.

The tape was discovered by Nigel Reeve, the man in charge of Bowie’s back catalogue. Speaking to the BBC about his find, Reeve says: “I discovered it during some research several years ago. It was in an old tape vault on 1/4″ tape with simply the words ‘Radio Show’ written on it. This is such a rare find. No-one knew of its existence, apart from David and Ken [Scott, the album and radio show’s producer]. To play it for the first time was quite simply a jaw-dropping moment.”

The radio show will be broadcast in parts across the day on 6 Music, and will be available to listen to until midnight on October 27 via the BBC iPlayer. Breakfast Show presenter Shaun Keaveny will play the first part of the promo at 9.30am, followed by further clips through the day in Lauren Laverne, Radcliffe and Maconie and Steve Lamacq’s shows, with the final part airing on Marc Riley’s programme in the evening.

David Bowie’s website.

The track will appear on ‘The Next Day Extra’, the extended, three-disc version of Bowie’s 2013 comeback album ‘The Next Day’, which is released on November 4.